First let me apoligize for the delay in getting back to you
Where I found the information is bits and pieces put together. No one will outright tell you much for fear of the FDA jumping down their throat. This is my logic for figuring this out. Colloidal Silver
will kill any of about 650 microorganisms it comes in contact with except the so-called benificial bacteria in your gut, however it will kill all spore forming bacteria. When planning a probiotic to take with CS, check to see if it contains any spore forming bacteria. (these will not survive the CS) About how long CS stays in your system one site claims the half life, the time it takes your system to remove half of it is 2.8 days. Example. If you had 10 mg in your body, in 2.8 days you will have 5 mg and in another 2.8 days the amount would be 2.5 mg etc. Keeping this in mind, when you take CS, it builds up for about 6 to 8 days because it is not going out as fast as it ir coing in. Another says that it stays in your blood for 10 hours. I have a condition (bronchitis) that I take the CS for and when I stopped taking it for several (8 to 10) days it comes back.